118 lines
3.2 KiB
Java
118 lines
3.2 KiB
Java
/*
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* Copyright (c) 2017, 7u83 <7u83@mail.ru>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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package opensesim.indicators;
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import org.json.JSONObject;
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import opensesim.old_sesim.OHLCData;
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import opensesim.old_sesim.OHLCDataItem;
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/**
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*
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* @author 7u83 <7u83@mail.ru>
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*/
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public class SMAIndicator extends BaseIndicator {
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private OHLCData parent;
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OHLCData indicator;
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public SMAIndicator() {
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indicator = new OHLCData();
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}
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public void setParent(OHLCData parent) {
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this.parent = parent;
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}
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final String LEN = "len";
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int len = 60;
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@Override
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public void putConfig(JSONObject cfg) {
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len = cfg.getInt(LEN);
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}
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@Override
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public JSONObject getConfig() {
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JSONObject r;
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r = new JSONObject();
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r.put(LEN, len);
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return r;
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}
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private float getAt(int pos) {
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if (parent.size() == 0) {
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return 0;
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}
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int start = pos - len;
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if (start < 0) {
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start = 0;
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}
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float sum = 0;
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for (int i = start; i <= pos; i++) {
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sum += parent.get(i).close;
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}
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return sum / (pos - start + 1);
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}
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public void update() {
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if (parent.size() == 0) {
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return;
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}
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if (parent.size() == indicator.size()) {
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int i = parent.size() - 1;
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OHLCDataItem p = parent.get(i);
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float pr = this.getAt(i);
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OHLCDataItem it = new opensesim.old_sesim.OHLCDataItem(p.time, pr, 0);
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this.indicator.set(i, it);
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return;
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}
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for (int i = indicator.size(); i < parent.size(); i++) {
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OHLCDataItem p = parent.get(i);
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float pr = this.getAt(i);
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OHLCDataItem it = new opensesim.old_sesim.OHLCDataItem(p.time, pr, 0);
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this.indicator.add(it);
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}
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}
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public OHLCData getData() {
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update();
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return indicator;
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}
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}
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